#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <string.h>
int Add(int x, int y)
{
	return x + y;
}
int jian(int x, int y)
{
	return x - y;
}
int mul(int x, int y)
{
	return x * y;
}
int Div(int x, int y)
{
	return x / y;
}
void caul(int(*pf)(int,int))
{
	int i = 0;
	int j = 0;
	scanf("%d %d", &i, &j);
	int ret = pf(i, j);
	printf("%d", ret);

}
int main()
{
	int i = 0;
	int j = 0;
	int n = 0;
	/*scanf("%d", &n);
	int(*Parr[])(int, int) = { NULL,Add,jian,mul,Div };
	scanf("%d %d", &i, &j);*/
	caul(Add);
	//int ret = Parr[n](i, j);
	//int ret = Add(i, j);
	//printf("%d", ret);
	return 0;
}